English operator: Panoramio described at URL: https://web.archive.org/web/20161011234620/http://www.panoramio.com/photo/2988311...
English operator: Panoramio described at URL: https://web.archive.org/web/20161016190712/http://www.panoramio.com/photo/47040998...
English operator: Panoramio described at URL: https://web.archive.org/web/20161014104323/http://www.panoramio.com/photo/28969312...
panoramio.com/user/292673?with_photo_id=4128086 operator: Panoramio described at URL: https://web.archive.org/web/20161010034431/http://www.panoramio...
archive.org/web/20161013184419/http://www.panoramio.com/user/2223411?with_photo_id=24202053 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161028042313/http://www.panoramio.com/user/1868017?with_photo_id=23738203 operator: Panoramio described at URL: https://web.archive...
panoramio.com/user/586448?with_photo_id=5975908 operator: Panoramio described at URL: https://web.archive.org/web/20161010225540/http://www.panoramio...
archive.org/web/20161012030739/http://www.panoramio.com/user/2050493?with_photo_id=12498953 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161111170058/http://www.panoramio.com/user/3340207?with_photo_id=41431619 operator: Panoramio described at URL: https://web.archive...
English operator: Panoramio described at URL: https://web.archive.org/web/20161023051624/http://www.panoramio.com/photo/55069609 determination method...